Question 633838
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Hi,
Using the standard slope-intercept form for an equation of a line y = mx + b
  where m is the slope and b the y-intercept.
line which passes through (2, 1) and is perpendicular to x = –2
New Line:  m = 1/2
 y = (1/2)x + b
 1 = (1/2)·2 + b   |Using ordered pair (x,y):(2,1)  to solve for b
 0 = b,   y = (1/2)x   or x-2y = 0

line which passes through (5, –2) and is parallel to x = 4 (vertical line!)
New Line:   vertical line, x = 5